I don’t know who needs to hear this, but.
ACRONYMS are a specific type of abbreviation where each letter stands for a different word. For example, ATM starts for automatic teller machine, and USB stands for Universal Serial Bus.
Abbreviations that are NOT acronyms shoukd not be written in all caps. Think “info” for information or “sis” for sister. Those just get capitalized (on not) like regular words, based on where they are in the sentence or whether they’re part of a title etc.
“App” Is not an acronym. It is an abbreviation. For application. It is therefore not written in all caps. It’s an app. Not an APP.
“Fax” is also not an acronym. It’s an abbreviation for facsimile, and shoukd therefore not be written FAX. (This one is perhaps a Japan problem… LOL)
And the most infuriating of all… “visa,” as in the thing that gives you permission to live in a foreign country, is not an abbreviation OR and acronym. It’s just a word. Your phone wants to write VISA for the same reason my phone wants to write GACKT or X JAPAN even though that looks stupid in an English sentence… because a corporation that owns something with that name (in this case, the VISA credit card company) has decided that people should write it The Correct Way™️ even in a casual text.
But it’s not the same thing. You get a work visa or a spouse visa. You get a VISA gold card if said spouse also makes a lot of money, I guess. But the two things are not related, and the thing that gives you a valid immigration status shouldn’t be capitalized.
(I also want to add that I don’t blame any individual for NOT KNOWING these things. Everyone has things they don’t know, and you can’t use something correctly if you don’t know what the usage is… but I HATE seeing big companies who should have writers and editors in their PR departments doing this and making it mainstream… capital letters do actually mean something besides looking important or cool?)